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scikit-learn: A walk through of *GroupKFold.split()*

Suppose $X[\text{“groups”}] = \begin{bmatrix} a \newline b \newline b \newline c \newline c \newline c \end{bmatrix}$ and n_splits=3.

Suppose $X[\text{“groups”}] = \begin{bmatrix} a \newline b \newline b \newline c \newline c \newline c \end{bmatrix}$ and n_splits=3.

Prepare a test dataset:

Precomputed Eigen scores are available at Download Eigen/Eigen-PC scores.

总结自 R Graphics Cookbook

If you just google, you may find autocommit a vaguely defined term.

```python import pprint

Effective Python Item 45: Use datetime Instead of time for Local Clocks

Effective Python Item 50: Use Packages to Organize Modules and Provide Stable APIs